21268429

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{12301}}^1$

素因数の和:12340

約数の個数: 16

約数和(自身を含む): 27556480

約数和(自身を除く): 6288051

約数列:

[1, 7, 13, 19, 91, 133, 247, 1729, 12301, 86107, 159913, 233719, 1119391, 1636033, 3038347, 21268429]

約数ペア:

[(1, 21268429), (7, 3038347), (13, 1636033), (19, 1119391), (91, 233719), (133, 159913), (247, 86107), (1729, 12301)]